I know it's silly and not even that well done, but when I think epic I think of when Kira first shows up in the Freedom around Seed episode 30ish. It worked really well because everyone thought he was dead and the bridge was essentially boned, so he shows up and could have only been more bullshit angelic if he was in Wing Zero Custom.

That or a scene in 08th MS team I won't describe until I know you've seen it.